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Ruihui Zhao

Senior Researcher
Tecent Jarvis Lab

Email: zacharyzhao [AT] tencent [DOT] com
Address: Tencent Building, 10000 Shennan Boulevard Nanshan District, Shenzhen 518000, China


Ruihui Zhao received his B.S. degree at UESTC (2015) and M.S. degree at Waseda University (早稻田大学, 2017). He joined Tencent Jarvis Lab as a senior researcher in early 2018. Previously, he was an NLP engineer at Sinovation Ventures (2017 - 2018). He has several papers accepted by ACL, WWW, AAAI, NAACL, IJCNN, TOIT, IEEE WCSP, etc. His research and projects mainly focus on NLP and information security.

We are looking for FTE & Research interns who are interested in Healthcare AI. Please send your CV to me if you want to join us.

Research Interests

  • Natural Language Processing: Medical Pre-training Language Modeling, Knowledge Distillation, Text Matching, Taxonomy Construction and Expansion, Question Generation and Answering, etc.
  • Machine Learning Techniques: Time Series Anomaly Detection, Community Detection, Graph Embeddings, Model Interpretability, etc.
  • Information Security: Federated Learning, Searchable Encryption

  • Projects

    Applying NLP and machine learning techniques to the fields of healthcare and security:
  • Lead a medical insurance recommendation project and 5 full-time research engineers;
  • Lead a medical insurance anti-fraud project and 5 full-time research engineers, including techniques such as gang detection, time series anomaly detection, graph embeddings, model interpretability, federated learning, etc.
  • Lead a Covid-19 vaccine question answering system (project sponsor);
  • Owned a medical QA and search ranking system which supported Tencent Healthcare;
  • Owned a federated machine learning project, cooperated with Webank AI team;
  • Owned a medical entity recommendation project based on NER, intent detection and medical ontology, cooperated with Tencent Wechat search team;
  • Owned a project which applied explainable anomaly detection algorithms on sequential security data, cooperated with Tencent Security team;
  • Owned a Language Model toolkit, cooperated with Tencent PCG Venus platform;
  • Participated in an intelligent aided diagnosis system.

  • Selected Publication [Google Scholar]


    Tell Me How to Survey: Literature Review Made Simple with Automatic Reading Path Generation
        Jiayuan Ding, Tong Xiang, Zijing Ou, Wangyang Zuo, Ruihui Zhao, Chenghua Lin, Yefeng Zheng and Bang Liu
        IEEE International Conference on Data Engineering 2022 (ICDE-2022 Industry Track, CCF-A), Virtual Conference, hosted by Kuala Lumpur, Malaysia

    QEN: Applicable Taxonomy Completion via Evaluating Full Taxonomic Relations
        Suyuchen Wang, Ruihui Zhao, Yefeng Zheng and Bang Liu
        The Web Conference (WWW-2022, CCF-A), Virtual Conference, hosted by Lyon, France


    Refining BERT Embeddings for Document Hashing via Mutual Information Maximization
        Zijing Ou, Qinliang Su, Jianxing Yu, Ruihui Zhao, Yefeng Zheng and Bang Liu
        The 2021 Conference on Empirical Methods in Natural Language Processing (EMNLP-2021 findings, CCF-B), Punta Cana, Dominican Republic

    Integrating Semantics and Neighborhood Information with Graph-Driven Generative Models for Document Retrieval
        Zijing Ou, Qinliang Su, Jianxing Yu, Bang Liu, Jingwen Wang, Ruihui Zhao, Changyou Chen and Yefeng Zheng
        The 59th Annual Meeting of the Association for Computational Linguistics (ACL-2021, CCF-A), Bangkok, Thailand

    Guiding the Growth: Difficulty-Controllable Question Generation through Step-by-Step Rewriting
        Yi Cheng, Siyao Li, Bang Liu, Ruihui Zhao, Sujian Li, Chenghua Lin and Yefeng Zheng
        The 59th Annual Meeting of the Association for Computational Linguistics (ACL-2021, CCF-A), Bangkok, Thailand

    Imperfect also Deserves Reward: Multi-Level and Sequential Reward Modeling for Better Dialog Management
        Zhengxu Hou, Bang Liu, Ruihui Zhao, Zijing Ou, Yafei Liu, Xi Chen, Yefeng Zheng
        2021 Annual Conference of the North American Chapter of the Association for Computational Linguistics (NAACL-2021, NLP top-tier Conf.), Virtual Conference

    Enquire One's Parent and Child Before Decision: Fully Exploit Hierarchical Structure for Self-Supervised Taxonomy Expansion
        Suyuchen Wang, Ruihui Zhao, Xi Chen, Yefeng Zheng, Bang Liu
        The Web Conference (WWW-2021, CCF-A), Virtual Conference

    FedOVA: One-vs-All Training Method for Federated Learning with Non-IID Data
        Yuanshao Zhu, Christos Markos, Ruihui Zhao, Yefeng Zheng, James Yu
        International Joint Conference on Neural Networks (IJCNN-2021, CCF-C), Virtual Conference

    Graph-Evolving Meta-Learning for Low-Resource Medical Dialogue Generation
        Shuai Lin, Pan Zhou, Xiaodan Liang, Jianheng Tang, Ruihui Zhao, Ziliang Chen, Liang Lin
        The Thirty-Fifth AAAI Conference on Artificial Intelligence (AAAI-2021, CCF-A), Virtual Conference

    Towards Communication-efficient and Attack-resistant Federated Edge Learning for Industrial Internet of Things
        Yi Liu, Ruihui Zhao, Jiawen Kang, Abdulsalam Yassine, Dusit Niyato, Jialiang Peng*
        Transactions on Internet Technology (TOIT-2021, CCF-B, IF=4.79)


    Privacy-Preserving Technology to Help Millions of People: Federated Prediction Model for Stroke Prevention
        Ce Ju*, Ruihui Zhao*, Jichao Sun, Xiguang Wei, Bo Zhao, Yang Liu, Hongshan Li, Tianjian Chen, Xinwei Zhang, Dashan Gao, Ben Tan, Han Yu and Yuan Jin
        The 29th International Joint Conference on Artificial Intelligence (FML'IJCAI-2020), Virtual Conference

    Forecasting the long-term trend of COVID-19 epidemic using a dynamic model
        Jichao Sun,† Xi Chen,† Ziheng Zhang,† Shengzhang Lai, Bo Zhao, Hualuo Liu, Shuojia Wang, Wenjing Huan, Ruihui Zhao, Man Tat Alexander Ng*, Yefeng Zheng*
        Scientific Reports (Scientific Reports, IF=4.525)

    2019 and Before

    A Lightweight Efficient Searchable Encryption Scheme using Supervised Sentence Representations
        Ruihui Zhao, Mizuho Iwaihara, etc.
        The 28th International Joint Conference on Artificial Intelligence (FL'IJCAI-2019), Macau, China

    A Community-based P2P OSNs Using Broadcast Encryption Supporting Cross-platform with High-Security
        Mingjie Ding, Ruihui Zhao, Keiichi Koyanagi, Takeshi Tsuchiya, Hiroaki Sawano
        8th International Conference on Wireless Communications & Signal Processing (IEEE WCSP-2016, EI), Yangzhou, China

    Privacy-preserving personalized search over encrypted cloud data supporting multi-keyword ranking
        Ruihui Zhao, Hongwei Li, Yi Yang, Yu Liang
        6th International Conference on Wireless Communications & Signal Processing (IEEE WCSP-2014, EI), Hefei, China

    Academic Services

  • Industry Chair: AAAI 2021 rseml workshop, [Link]
  • Program Committee Board (PCB) member of IJCAI (serve for IJCAI 2021, IJCAI-ECAI 2022, IJCAI 2023 and IJCAI 2024)
  • Reviewer: EMNLP 2021, TPDS 2018 (CCF-A Trans.), AACL 2020, etc.